When Sailing in the Open Sea: How Much to Fire the Boiler Compared to in Port and Anchorage
When sailing in the open sea, the amount of fuel required to maintain a steady speed depends on the following factors:
- Wind speed and direction: Tailwinds reduce fuel consumption, while headwinds increase it.
- Wave height and direction: Large, choppy waves require more power to navigate.
- Hull displacement: Heavier boats require more fuel to move through the water.
- Propeller efficiency: Well-maintained propellers reduce fuel consumption.
- Speed: Higher speeds require more fuel.
Compared to sailing in port or anchorage:
- Open sea: Higher fuel consumption due to factors mentioned above.
- Port/Anchorage: Lower fuel consumption as the boat is not moving against wind or waves.
General guidelines:
- Open sea: Fire the boiler at 60-80% capacity.
- Port/Anchorage: Fire the boiler at 10-20% capacity.
Adjustments:
Fine-tune fuel consumption based on the specific conditions encountered during sailing.
Questions and Answers:
- Why is fuel consumption higher in the open sea? Answer: Wind, waves, and boat displacement increase fuel requirements.
- When should you fire the boiler at maximum capacity? Answer: When encountering strong headwinds or large waves.
- What factors affect propeller efficiency? Answer: Cleanliness, pitch, and diameter.
- How can you reduce fuel consumption at low speeds? Answer: Use a smaller propeller or throttle back the engine.
- What percentage of capacity should you fire the boiler at in port? Answer: 10-20%.
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